PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-01:12:40
G01     75.8           33.3                3.6 +/-    1.37       5.9 +/-    1.37  0.030 / 0.040
G07     134.9          35.1                6.1 +/-    0.96       9.7 +/-    0.96  0.030 / 0.040
G11     59.0           35.7                4.2 +/-    1.67       6.5 +/-    1.67  0.060 / 0.100
G13     280.7          37.4                6.5 +/-    1.57       9.9 +/-    1.57  0.070 / 0.080
G15     305.5          14.8                3.0 +/-    2.14       7.5 +/-    2.14  0.040 / 0.040
G17     226.8          63.4                6.8 +/-    1.00       7.6 +/-    1.00  0.050 / 0.040
G19     221.3          38.5                8.2 +/-    1.57      12.3 +/-    1.57  0.090 / 0.090
G28     13.4           60.0                3.7 +/-    0.51       4.2 +/-    0.51  0.070 / 0.090
G30     130.8          61.3                5.8 +/-    0.70       6.5 +/-    0.70  0.070 / 0.090