PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-02:12:40
G01     74.2           33.2                2.9 +/-    1.04       4.7 +/-    1.04  0.030 / 0.040
G07     135.7          33.8                6.2 +/-    1.84      10.1 +/-    1.84  0.030 / 0.040
G11     57.6           34.4                4.3 +/-    1.33       6.9 +/-    1.33  0.060 / 0.090
G13     279.2          37.4                5.4 +/-    1.25       8.3 +/-    1.25  0.050 / 0.080
G15     304.4          15.2                2.3 +/-    1.62       5.7 +/-    1.62  0.040 / 0.020
G17     228.7          65.3                8.1 +/-    1.12       8.8 +/-    1.12  0.030 / 0.030
G19     222.2          39.9                7.0 +/-    1.59      10.2 +/-    1.59  0.050 / 0.080
G28     15.8           59.7                3.7 +/-    0.66       4.2 +/-    0.66  0.220 / 0.200
G30     132.2          60.1                7.0 +/-    0.44       8.0 +/-    0.44  0.050 / 0.090