PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-16:12:50
G01     69.3           32.3               10.5 +/-    0.58      17.5 +/-    0.58  0.040 / 0.120
G07     137.3          26.0               12.3 +/-    0.65      23.5 +/-    0.65  0.050 / 0.110
G11     52.7           30.5                9.6 +/-    1.06      16.7 +/-    1.06  0.040 / 0.060
G13     272.7          38.4               13.0 +/-    0.84      19.4 +/-    0.84  0.040 / 0.060
G15     301.5          15.6                7.7 +/-    1.46      18.8 +/-    1.46  0.060 / 0.180
G17     232.0          67.7               12.2 +/-    0.64      13.1 +/-    0.64  0.070 / 0.160
G18     47.5           17.2                7.6 +/-    1.17      17.9 +/-    1.17  0.050 / 0.090
G19     223.7          43.6               13.6 +/-    1.67      18.7 +/-    1.67  0.050 / 0.080
G28     9.3            60.8               10.5 +/-    0.72      11.8 +/-    0.72  0.030 / 0.050
G30     136.2          58.5               10.9 +/-    0.60      12.6 +/-    0.60  0.030 / 0.050