PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-19:12:50
G01     60.5           30.7               11.3 +/-    1.07      19.5 +/-    1.07  0.110 / 0.230
G07     142.2          23.0               17.4 +/-    2.95      35.7 +/-    2.95  0.130 / 0.320
G11     48.7           24.5               11.3 +/-    1.79      22.3 +/-    1.79  0.080 / 0.130
G13     263.0          35.3               16.2 +/-    1.39      25.6 +/-    1.39  0.080 / 0.130
G15     294.9          16.0               12.2 +/-    1.82      29.6 +/-    1.82  0.040 / 0.040
G17     253.1          73.7               16.2 +/-    0.48      16.8 +/-    0.48  0.040 / 0.040
G18     42.7           13.3                9.4 +/-    2.30      24.3 +/-    2.30  0.070 / 0.070
G19     232.1          48.6               16.4 +/-    1.65      21.1 +/-    1.65  0.060 / 0.080
G28     35.5           56.7               12.9 +/-    1.17      15.1 +/-    1.17  0.160 / 0.310
G30     143.4          52.1               16.2 +/-    0.66      19.9 +/-    0.66  0.080 / 0.160