PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-17:57:40
G07     347.0          62.4               11.1 +/-    0.47      12.4 +/-    0.47  0.120 / 0.160
G08     93.7           51.8               11.0 +/-    0.93      13.6 +/-    0.93  0.090 / 0.160
G09     191.3          72.5               11.9 +/-    0.44      12.5 +/-    0.44  0.040 / 0.040
G11     143.2          15.5               14.1 +/-    2.77      34.7 +/-    2.77  0.030 / 0.040
G23     156.4          40.0               11.6 +/-    0.69      16.9 +/-    0.69  0.090 / 0.090
G27     54.7           31.9                9.6 +/-    0.97      16.1 +/-    0.97  0.090 / 0.070
G28     237.5          27.1               12.9 +/-    1.48      24.0 +/-    1.48  0.040 / 0.030
G30     304.3          37.7               10.5 +/-    1.29      16.0 +/-    1.29  0.030 / 0.030