PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-21:58:10
G01     45.4           21.6               10.1 +/-    2.76      21.3 +/-    2.76  0.040 / 0.030
G06     178.5          27.9               15.5 +/-    2.26      28.4 +/-    2.26  0.040 / 0.050
G11     43.3           9.4                 9.6 +/-    2.72      27.2 +/-    2.72  0.130 / 0.270
G13     243.9          27.6               14.5 +/-    2.17      26.8 +/-    2.17  0.180 / 0.340
G15     277.4          14.6               10.7 +/-    1.16      26.8 +/-    1.16  0.040 / 0.050
G17     344.4          75.9               12.8 +/-    0.39      13.2 +/-    0.39  0.030 / 0.050
G19     256.6          64.5               13.8 +/-    0.88      15.1 +/-    0.88  0.080 / 0.130
G24     318.0          13.8                9.2 +/-    2.72      23.5 +/-    2.72  0.090 / 0.170
G28     55.5           53.4               11.5 +/-    0.87      14.0 +/-    0.87  0.070 / 0.100
G30     151.7          34.3               15.0 +/-    0.67      24.1 +/-    0.67  0.060 / 0.100