PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/30-13:42:40
G02     204.7          32.8                5.9 +/-    1.35       9.8 +/-    1.35  0.120 / 0.070
G06     153.8          70.9                7.0 +/-    0.67       7.4 +/-    0.67  0.060 / 0.060
G12     307.7          16.4                3.7 +/-    2.38       8.8 +/-    2.38  0.040 / 0.040
G17     34.2           50.5                4.9 +/-    1.03       6.2 +/-    1.03  0.060 / 0.030
G19     7.8            63.6                5.5 +/-    0.58       6.1 +/-    0.58  0.060 / 0.040
G24     297.0          37.8                4.2 +/-    3.64       6.4 +/-    3.64  0.030 / 0.040
G28     100.2          36.2                6.7 +/-    0.82      10.3 +/-    0.82  0.080 / 0.100