PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-22:27:50
G07     357.0          64.7               10.0 +/-    1.00      11.0 +/-    1.00  0.080 / 0.140
G08     78.9           51.0               10.4 +/-    0.59      13.0 +/-    0.59  0.170 / 0.130
G09     182.6          63.2               10.7 +/-    0.64      11.8 +/-    0.64  0.030 / 0.030
G11     137.8          20.3               12.5 +/-    2.87      27.4 +/-    2.87  0.030 / 0.040
G23     158.9          33.6               10.4 +/-    0.71      17.0 +/-    0.71  0.070 / 0.110
G27     48.9           28.2                7.6 +/-    1.99      13.9 +/-    1.99  0.100 / 0.180
G28     244.1          34.0                9.5 +/-    1.50      15.4 +/-    1.50  0.040 / 0.030
G30     309.2          41.2                9.5 +/-    1.24      13.5 +/-    1.24  0.050 / 0.030