PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-19:12:50
G01     91.8           31.5               12.6 +/-    0.97      21.3 +/-    0.97  0.190 / 0.250
G07     124.2          47.2               14.4 +/-    0.59      18.9 +/-    0.59  0.130 / 0.340
G08     42.4           10.9                9.1 +/-    1.57      24.9 +/-    1.57  0.020 / 0.040
G11     71.4           40.9               12.5 +/-    1.20      17.9 +/-    1.20  0.020 / 0.030
G13     296.3          35.4               13.3 +/-    2.75      21.0 +/-    2.75  0.040 / 0.050
G17     214.2          48.8               15.1 +/-    0.83      19.4 +/-    0.83  0.040 / 0.050
G18     65.6           24.3               11.5 +/-    1.11      22.9 +/-    1.11  0.100 / 0.130
G19     214.2          24.5               16.3 +/-    1.86      32.2 +/-    1.86  0.060 / 0.130
G28     346.9          61.8               12.4 +/-    0.52      13.9 +/-    0.52  0.040 / 0.050
G30     101.1          76.1               14.1 +/-    0.64      14.4 +/-    0.64  0.030 / 0.040