PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-16:27:50
G03     189.0          22.5               10.7 +/-    2.07      22.2 +/-    2.07  0.110 / 0.320
G07     289.4          39.9                9.6 +/-    2.56      14.0 +/-    2.56  0.140 / 0.290
G08     143.7          24.4               12.3 +/-    1.22      24.3 +/-    1.22  0.040 / 0.040
G09     320.5          57.0                8.7 +/-    0.47      10.1 +/-    0.47  0.040 / 0.030
G16     45.9           47.2                7.1 +/-    0.58       9.3 +/-    0.58  0.070 / 0.070
G23     84.7           82.8              -20.0 +/-    0.46     -20.2 +/-    0.46  0.060 / 0.090
G26     43.5           18.0                6.6 +/-    2.66      15.1 +/-    2.66  0.030 / 0.030
G27     107.2          31.3               11.4 +/-    1.69      19.4 +/-    1.69  0.030 / 0.040
G30     270.8          11.0              -10.5 +/-   28.07     -28.6 +/-   28.07  0.040 / 0.070