PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-06:28:00
G01     296.0          38.8                6.8 +/-    1.43      10.0 +/-    1.43  0.070 / 0.120
G03     310.4          13.4                4.8 +/-    2.57      12.5 +/-    2.57  0.040 / 0.080
G10     116.4          31.7                7.5 +/-    1.00      12.6 +/-    1.00  0.050 / 0.060
G11     269.3          26.9                7.6 +/-    1.47      14.2 +/-    1.47  0.050 / 0.060
G14     12.8           62.6                5.2 +/-    0.68       5.8 +/-    0.68  0.040 / 0.090
G18     259.4          48.9                8.3 +/-    1.42      10.6 +/-    1.42  0.050 / 0.100
G22     313.2          36.0                5.9 +/-    1.19       9.2 +/-    1.19  0.070 / 0.090
G25     70.9           18.5                3.8 +/-    0.82       8.7 +/-    0.82  0.070 / 0.080
G31     135.4          76.8                8.2 +/-    0.64       8.4 +/-    0.64  0.090 / 0.190
G32     48.7           43.2                4.8 +/-    0.24       6.7 +/-    0.24  0.080 / 0.210