PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-01:27:50
G01     83.5           33.0                4.3 +/-    0.44       7.1 +/-    0.44  0.040 / 0.060
G07     130.3          40.8                5.7 +/-    0.64       8.2 +/-    0.64  0.040 / 0.040
G11     65.1           38.9                3.3 +/-    0.86       4.8 +/-    0.86  0.040 / 0.040
G13     288.8          36.8                4.3 +/-    1.06       6.5 +/-    1.06  0.030 / 0.050
G15     310.7          12.8                3.9 +/-    1.98      10.2 +/-    1.98  0.050 / 0.090
G17     219.7          57.7                6.1 +/-    0.62       7.0 +/-    0.62  0.050 / 0.110
G19     217.5          32.7                5.7 +/-    1.53       9.4 +/-    1.53  0.030 / 0.050
G28     1.6            61.1                4.4 +/-    0.55       4.9 +/-    0.55  0.040 / 0.070
G30     121.9          66.7                6.0 +/-    1.17       6.5 +/-    1.17  0.060 / 0.070