PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/22-11:58:00
G01     260.1          39.6                5.7 +/-    2.89       8.4 +/-    2.89  0.050 / 0.080
G03     317.1          41.3                3.7 +/-    0.53       5.3 +/-    0.53  0.060 / 0.120
G10     133.4          9.9                 4.8 +/-    1.72      13.4 +/-    1.72  0.180 / 0.350
G11     243.1          15.8                4.3 +/-    1.19      10.5 +/-    1.19  0.260 / 0.240
G14     51.9           45.2                4.7 +/-    0.90       6.3 +/-    0.90  0.040 / 0.030
G18     224.8          33.1                5.4 +/-    1.56       8.8 +/-    1.56  0.050 / 0.030
G22     310.8          63.5                3.8 +/-    0.62       4.2 +/-    0.62  0.060 / 0.080
G25     45.8           13.5                2.3 +/-    3.83       5.9 +/-    3.83  0.070 / 0.070
G31     46.0           67.5                3.4 +/-    0.48       3.7 +/-    0.48  0.210 / 0.300
G32     67.5           32.1                2.4 +/-    1.09       4.0 +/-    1.09  0.180 / 0.420