PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/26-10:57:30
G01     38.3           11.0                2.5 +/-    2.29       6.9 +/-    2.29  0.040 / 0.090
G02     199.5          14.8                5.3 +/-    3.76      13.1 +/-    3.76  0.050 / 0.080
G06     175.7          44.7               10.4 +/-    1.17      14.1 +/-    1.17  0.030 / 0.030
G13     233.7          17.5                4.8 +/-    2.14      11.1 +/-    2.14  0.030 / 0.040
G15     265.0          10.0                3.4 +/-    2.24       9.5 +/-    2.24  0.060 / 0.330
G17     17.2           63.4                5.2 +/-    0.52       5.7 +/-    0.52  0.140 / 0.150
G19     306.2          72.0                5.5 +/-    0.81       5.8 +/-    0.81  0.140 / 0.190
G24     314.6          23.4                2.0 +/-    1.60       4.0 +/-    1.60  0.160 / 0.380
G28     81.1           42.8                5.7 +/-    0.46       8.0 +/-    0.46  0.230 / 0.330
G30     156.1          21.0                7.8 +/-    2.15      16.9 +/-    2.15  0.060 / 0.080