PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-06:28:10
G01     75.1           33.2                3.1 +/-    0.78       5.2 +/-    0.78  0.040 / 0.050
G07     135.2          33.7                6.4 +/-    0.94      10.4 +/-    0.94  0.040 / 0.050
G11     56.9           33.0                2.1 +/-    1.33       3.5 +/-    1.33  0.080 / 0.250
G13     280.8          37.2                4.8 +/-    2.39       7.4 +/-    2.39  0.100 / 0.190
G15     305.4          14.8                0.4 +/-    2.17       0.9 +/-    2.17  0.040 / 0.020
G17     228.1          67.0                6.9 +/-    0.94       7.4 +/-    0.94  0.030 / 0.020
G19     221.7          40.0                7.0 +/-    1.43      10.2 +/-    1.43  0.070 / 0.080
G28     14.4           59.8                3.2 +/-    0.51       3.6 +/-    0.51  0.080 / 0.080
G30     130.7          63.9                5.5 +/-    0.39       6.0 +/-    0.39  0.060 / 0.070