PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-14:28:10
G02     206.7          39.4               11.1 +/-    0.95      16.3 +/-    0.95  0.070 / 0.080
G06     137.8          76.1                8.7 +/-    0.44       9.0 +/-    0.44  0.070 / 0.090
G12     310.7          20.8                7.2 +/-    1.90      15.5 +/-    1.90  0.030 / 0.070
G17     39.5           46.6                7.1 +/-    1.28       9.3 +/-    1.28  0.040 / 0.040
G19     18.0           59.6                7.9 +/-    0.81       9.0 +/-    0.81  0.050 / 0.040
G24     289.9          40.2               12.6 +/-    4.34      18.3 +/-    4.34  0.040 / 0.030
G28     106.2          32.1                7.1 +/-    1.99      11.9 +/-    1.99  0.070 / 0.110