PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-21:27:40
G02     243.7          76.3                9.8 +/-    0.88      10.1 +/-    0.88  0.180 / 0.300
G05     170.9          16.9               14.5 +/-    0.83      34.5 +/-    0.83  0.140 / 0.290
G06     40.1           59.4               10.4 +/-    0.73      11.9 +/-    0.73  0.080 / 0.120
G12     320.8          49.7                8.9 +/-    0.86      11.3 +/-    0.86  0.080 / 0.120
G17     70.5           22.6                8.6 +/-    0.98      17.8 +/-    0.98  0.070 / 0.080
G19     57.6           37.6                9.2 +/-    0.33      14.0 +/-    0.33  0.070 / 0.070
G24     244.4          34.4               13.5 +/-    1.51      21.6 +/-    1.51  0.040 / 0.050
G25     316.3          12.3                9.1 +/-    5.40      24.2 +/-    5.40  0.040 / 0.070