PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-21:28:10
G01     48.5           24.3                9.6 +/-    1.83      19.1 +/-    1.83  0.040 / 0.050
G06     179.1          23.8               13.0 +/-    1.74      26.1 +/-    1.74  0.030 / 0.030
G11     43.9           13.1                9.6 +/-    2.20      25.0 +/-    2.20  0.160 / 0.210
G13     248.1          30.1               13.3 +/-    1.31      23.2 +/-    1.31  0.110 / 0.190
G15     281.5          15.6                9.3 +/-    1.59      22.9 +/-    1.59  0.050 / 0.050
G17     325.9          78.4               11.9 +/-    0.51      12.1 +/-    0.51  0.040 / 0.040
G19     248.3          61.3               12.1 +/-    0.60      13.6 +/-    0.60  0.060 / 0.060
G28     48.6           55.0               10.7 +/-    0.91      12.7 +/-    0.91  0.060 / 0.080
G30     150.0          38.5               12.0 +/-    1.61      17.9 +/-    1.61  0.060 / 0.110