PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-21:42:30
G02     207.2          46.6               14.7 +/-    1.27      19.3 +/-    1.27  0.070 / 0.170
G06     136.9          78.2               12.6 +/-    0.57      12.8 +/-    0.57  0.090 / 0.160
G12     312.0          21.7               11.4 +/-    1.98      24.0 +/-    1.98  0.060 / 0.070
G17     45.7           41.1                8.4 +/-    1.40      12.0 +/-    1.40  0.060 / 0.080
G19     21.8           57.9               12.1 +/-    1.72      14.0 +/-    1.72  0.120 / 0.210
G24     283.1          42.1                9.2 +/-    1.82      12.9 +/-    1.82  0.130 / 0.160
G28     110.4          27.8               13.4 +/-    1.06      24.5 +/-    1.06  0.040 / 0.030