PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-06:58:00
G01     278.0          41.5                6.2 +/-    0.86       8.8 +/-    0.86  0.060 / 0.080
G03     314.7          24.6                5.2 +/-    1.41      10.3 +/-    1.41  0.050 / 0.050
G10     126.6          20.9                7.5 +/-    0.87      16.1 +/-    0.87  0.040 / 0.070
G11     255.1          22.4                6.5 +/-    2.82      13.6 +/-    2.82  0.040 / 0.060
G14     33.8           55.0                5.0 +/-    0.51       6.0 +/-    0.51  0.100 / 0.090
G18     240.1          42.5                8.7 +/-    0.95      12.2 +/-    0.95  0.090 / 0.120
G22     314.7          48.2                5.5 +/-    0.96       7.1 +/-    0.96  0.060 / 0.100
G25     57.0           17.8                2.5 +/-    0.78       5.9 +/-    0.78  0.070 / 0.070
G31     66.1           75.7                6.6 +/-    0.81       6.8 +/-    0.81  0.110 / 0.360
G32     60.9           34.1                3.9 +/-    0.57       6.3 +/-    0.57  0.120 / 0.400