PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-18:58:00
G01     124.4          13.1               13.0 +/-    1.77      34.0 +/-    1.77  0.030 / 0.030
G07     74.0           65.1               10.5 +/-    0.45      11.5 +/-    0.45  0.030 / 0.030
G08     48.2           36.6                9.7 +/-    1.15      15.0 +/-    1.15  0.080 / 0.100
G09     178.5          34.6               12.1 +/-    0.69      19.4 +/-    0.69  0.070 / 0.100
G11     113.7          37.4               12.4 +/-    0.98      18.9 +/-    0.98  0.080 / 0.090
G13     320.1          14.6               11.6 +/-    1.09      29.2 +/-    1.09  0.120 / 0.110
G17     199.5          18.1               11.4 +/-    1.30      26.3 +/-    1.30  0.030 / 0.030
G18     98.8           17.8               12.1 +/-    1.33      28.1 +/-    1.33  0.040 / 0.030
G28     275.2          51.0               12.6 +/-    3.47      15.6 +/-    3.47  0.140 / 0.370
G30     338.2          64.0               10.7 +/-    0.90      11.8 +/-    0.90  0.120 / 0.350