PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-12:12:40
G01     38.7           11.9                2.9 +/-    1.94       7.7 +/-    1.94  0.100 / 0.160
G02     199.7          13.1                4.6 +/-    3.20      12.0 +/-    3.20  0.110 / 0.120
G06     175.2          44.0                8.0 +/-    1.24      11.0 +/-    1.24  0.050 / 0.090
G13     234.8          18.4                4.4 +/-    1.70      10.2 +/-    1.70  0.040 / 0.070
G15     266.6          10.4                4.5 +/-    1.98      12.5 +/-    1.98  0.060 / 0.320
G17     16.1           64.2                3.6 +/-    0.62       4.0 +/-    0.62  0.050 / 0.270
G19     302.2          72.0                4.0 +/-    0.99       4.2 +/-    0.99  0.040 / 0.050
G24     315.2          22.4                1.6 +/-    1.41       3.3 +/-    1.41  0.070 / 0.070
G28     79.6           43.5                2.9 +/-    0.61       4.0 +/-    0.61  0.030 / 0.040
G30     156.0          22.7                5.6 +/-    1.44      11.6 +/-    1.44  0.030 / 0.040