PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-00:27:50
G01     273.4          41.2                8.6 +/-    0.99      12.3 +/-    0.99  0.050 / 0.060
G03     315.2          26.3                7.8 +/-    2.69      14.8 +/-    2.69  0.030 / 0.060
G10     128.5          19.3               10.2 +/-    1.30      22.8 +/-    1.30  0.050 / 0.080
G11     251.5          21.8               11.5 +/-    2.23      24.2 +/-    2.23  0.060 / 0.100
G14     42.2           50.4                6.7 +/-    0.35       8.4 +/-    0.35  0.080 / 0.230
G22     314.3          48.8                7.2 +/-    1.30       9.2 +/-    1.30  0.090 / 0.190
G25     52.9           16.6                6.0 +/-    1.30      14.3 +/-    1.30  0.020 / 0.030
G26     153.0          21.4               11.7 +/-    2.38      24.9 +/-    2.38  0.020 / 0.030
G31     70.4           80.2                8.9 +/-    0.63       9.0 +/-    0.63  0.050 / 0.070
G32     60.9           35.8                7.0 +/-    0.70      11.0 +/-    0.70  0.050 / 0.060