PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-08:13:10
G01     77.9           33.2                3.6 +/-    0.81       5.9 +/-    0.81  0.040 / 0.040
G07     133.6          35.1                5.2 +/-    0.56       8.3 +/-    0.56  0.030 / 0.030
G11     57.0           33.5                2.5 +/-    0.60       4.0 +/-    0.60  0.030 / 0.080
G13     281.7          38.2                3.5 +/-    1.53       5.3 +/-    1.53  0.060 / 0.080
G15     310.3          11.8                2.0 +/-    1.25       5.5 +/-    1.25  0.060 / 0.110
G17     224.2          66.2                5.9 +/-    1.20       6.4 +/-    1.20  0.060 / 0.110
G18     52.2           19.5                2.5 +/-    1.43       5.5 +/-    1.43  0.080 / 0.250
G19     219.9          33.1                3.4 +/-    2.81       5.6 +/-    2.81  0.080 / 0.230
G28     5.8            60.9                3.2 +/-    0.70       3.6 +/-    0.70  0.060 / 0.120
G30     127.5          69.4                4.7 +/-    0.50       5.0 +/-    0.50  0.060 / 0.110