PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-19:57:50
G01     48.8           24.5                9.0 +/-    0.69      17.8 +/-    0.69  0.030 / 0.050
G06     178.5          24.2               13.4 +/-    1.64      26.8 +/-    1.64  0.040 / 0.070
G11     44.0           13.6                7.2 +/-    2.01      18.5 +/-    2.01  0.080 / 0.220
G13     248.4          30.4               11.7 +/-    0.76      20.3 +/-    0.76  0.080 / 0.240
G15     281.8          15.7               10.4 +/-    2.06      25.4 +/-    2.06  0.050 / 0.110
G17     319.7          78.6               10.8 +/-    0.76      11.0 +/-    0.76  0.050 / 0.120
G19     247.8          61.3               11.6 +/-    0.94      13.1 +/-    0.94  0.110 / 0.170
G28     47.3           55.4                9.1 +/-    0.63      10.8 +/-    0.63  0.100 / 0.230
G30     149.6          38.1               12.0 +/-    1.44      17.9 +/-    1.44  0.080 / 0.190