PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-11:13:00
G01     314.5          26.0                2.2 +/-    1.50       4.2 +/-    1.50  0.050 / 0.050
G10     94.2           47.2                4.4 +/-    0.39       5.8 +/-    0.39  0.040 / 0.060
G11     294.7          25.8                2.2 +/-    1.87       4.2 +/-    1.87  0.130 / 0.340
G14     318.1          69.9                3.5 +/-    0.65       3.7 +/-    0.65  0.130 / 0.370
G18     293.9          45.8                3.8 +/-    0.88       5.1 +/-    0.88  0.030 / 0.050
G22     306.9          22.7                1.8 +/-    1.74       3.7 +/-    1.74  0.030 / 0.050
G25     92.8           13.0                3.5 +/-    2.26       9.1 +/-    2.26  0.070 / 0.150
G31     170.4          55.3                6.6 +/-    1.55       7.8 +/-    1.55  0.070 / 0.120
G32     26.4           58.7                3.7 +/-    0.45       4.3 +/-    0.45  0.080 / 0.220