PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-17:58:00
G01     111.0          22.6               11.4 +/-    1.80      23.6 +/-    1.80  0.030 / 0.030
G07     104.2          55.4               12.4 +/-    0.58      14.7 +/-    0.58  0.030 / 0.020
G08     42.4           24.2                8.8 +/-    1.40      17.5 +/-    1.40  0.030 / 0.040
G09     176.4          19.3               12.3 +/-    3.63      27.6 +/-    3.63  0.030 / 0.050
G11     94.0           42.7               12.3 +/-    0.60      17.1 +/-    0.60  0.050 / 0.060
G13     312.6          26.4               12.4 +/-    1.92      23.5 +/-    1.92  0.060 / 0.050
G17     203.3          33.0               12.6 +/-    1.04      20.7 +/-    1.04  0.100 / 0.240
G18     83.4           23.1                9.9 +/-    1.78      20.3 +/-    1.78  0.100 / 0.230
G28     299.9          57.6               10.9 +/-    1.16      12.6 +/-    1.16  0.090 / 0.140
G30     14.8           76.3               12.2 +/-    1.03      12.5 +/-    1.03  0.090 / 0.150