PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-04:12:50
G01     39.8           14.0                1.8 +/-    3.27       4.6 +/-    3.27  0.050 / 0.060
G02     198.7          12.8                5.3 +/-    3.18      14.0 +/-    3.18  0.050 / 0.070
G06     176.9          40.2                6.2 +/-    0.86       8.9 +/-    0.86  0.100 / 0.300
G13     235.9          19.9                4.6 +/-    4.25      10.2 +/-    4.25  0.200 / 0.310
G15     267.2          11.3                4.5 +/-    1.79      12.1 +/-    1.79  0.030 / 0.030
G17     5.9            68.4                3.0 +/-    0.30       3.3 +/-    0.30  0.030 / 0.030
G19     289.6          70.8                3.4 +/-    0.58       3.6 +/-    0.58  0.110 / 0.240
G24     315.8          21.0                1.6 +/-    2.65       3.5 +/-    2.65  0.190 / 0.270
G28     76.5           44.7                3.8 +/-    0.82       5.1 +/-    0.82  0.470 / 0.390
G30     154.3          21.0                4.4 +/-    2.37       9.5 +/-    2.37  0.270 / 0.200