PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-19:57:50
G07     3.2            66.3               11.9 +/-    0.86      12.9 +/-    0.86  0.030 / 0.040
G08     75.5           53.5               12.9 +/-    0.72      15.6 +/-    0.72  0.030 / 0.040
G09     181.8          55.6               14.4 +/-    0.43      17.0 +/-    0.43  0.080 / 0.180
G11     135.9          23.7               17.4 +/-    2.86      34.9 +/-    2.86  0.080 / 0.120
G23     158.3          20.8               13.9 +/-    2.66      30.1 +/-    2.66  0.040 / 0.040
G27     42.3           20.1                9.3 +/-    2.20      20.3 +/-    2.20  0.030 / 0.040
G28     254.0          42.8               15.5 +/-    2.01      21.5 +/-    2.01  0.060 / 0.050
G30     318.3          49.1               11.5 +/-    0.77      14.6 +/-    0.77  0.050 / 0.050