PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-07:27:30
G02     235.3          75.8                8.2 +/-    0.34       8.4 +/-    0.34  0.270 / 0.540
G05     174.1          11.9                2.5 +/-    8.70       6.6 +/-    8.70  0.360 / 0.610
G06     41.7           62.1                5.6 +/-    0.95       6.3 +/-    0.95  0.030 / 0.040
G12     321.4          49.7                4.2 +/-    0.46       5.3 +/-    0.46  0.040 / 0.040
G17     67.7           23.5                4.8 +/-    1.25       9.7 +/-    1.25  0.060 / 0.090
G19     54.4           38.9                5.7 +/-    2.04       8.4 +/-    2.04  0.070 / 0.080
G24     250.8          36.5                8.3 +/-    1.86      12.8 +/-    1.86  0.180 / 0.360
G28     128.4          12.0                8.4 +/-    1.66      22.5 +/-    1.66  0.300 / 0.450