PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-12:27:50
G01     293.8          39.4                8.9 +/-    4.72      13.0 +/-    4.72  0.040 / 0.040
G03     311.7          17.9                4.4 +/-    1.70      10.2 +/-    1.70  0.050 / 0.050
G10     117.9          30.7                5.1 +/-    1.68       8.8 +/-    1.68  0.160 / 0.090
G11     269.6          26.2                5.7 +/-    2.08      10.8 +/-    2.08  0.120 / 0.090
G14     14.1           62.1                5.3 +/-    1.00       5.9 +/-    1.00  0.120 / 0.210
G18     257.8          48.2                5.8 +/-    9.29       7.5 +/-    9.29  0.080 / 0.210
G22     314.4          41.2                4.0 +/-    1.34       5.7 +/-    1.34  0.080 / 0.070
G25     70.0           19.1                4.4 +/-    1.38       9.9 +/-    1.38  0.050 / 0.060
G31     129.1          77.9                5.9 +/-    0.39       6.0 +/-    0.39  0.080 / 0.030
G32     50.2           42.2                4.1 +/-    1.01       5.7 +/-    1.01  0.060 / 0.060