PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-18:28:00
G01     281.5          41.3               13.8 +/-    1.16      19.7 +/-    1.16  0.050 / 0.060
G03     314.4          24.5                8.3 +/-    1.02      16.5 +/-    1.02  0.040 / 0.060
G10     124.9          23.6               10.7 +/-    0.54      21.6 +/-    0.54  0.070 / 0.120
G11     259.9          23.7               10.0 +/-    5.40      20.1 +/-    5.40  0.080 / 0.120
G14     32.9           55.1                9.1 +/-    1.03      10.8 +/-    1.03  0.070 / 0.070
G22     314.6          45.2                9.5 +/-    0.87      12.8 +/-    0.87  0.070 / 0.070
G25     60.0           18.6                9.2 +/-    2.67      20.9 +/-    2.67  0.020 / 0.020
G26     152.8          18.7               10.6 +/-    2.26      24.1 +/-    2.26  0.020 / 0.020
G31     85.2           79.6               10.5 +/-    0.53      10.6 +/-    0.53  0.110 / 0.130
G32     57.6           37.2               10.0 +/-    0.92      15.3 +/-    0.92  0.100 / 0.120