PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-17:57:20
G07     310.0          49.7               11.0 +/-    1.42      14.0 +/-    1.42  0.060 / 0.070
G08     127.9          39.5               16.2 +/-    0.69      23.8 +/-    0.69  0.040 / 0.070
G09     309.3          76.0               11.6 +/-    0.54      11.9 +/-    0.54  0.050 / 0.030
G16     41.9           30.3                9.6 +/-    1.04      16.7 +/-    1.04  0.050 / 0.030
G23     142.7          66.5               12.9 +/-    0.33      14.0 +/-    0.33  0.060 / 0.050
G27     84.3           37.7               12.8 +/-    1.00      19.3 +/-    1.00  0.080 / 0.070
G30     284.8          21.7               12.0 +/-    1.75      25.4 +/-    1.75  0.220 / 0.260