PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-11:57:50
G01     38.5           11.4                2.5 +/-    3.15       6.8 +/-    3.15  0.120 / 0.390
G02     199.6          13.8                4.5 +/-    0.79      11.5 +/-    0.79  0.110 / 0.440
G06     175.2          44.6                9.7 +/-    1.38      13.1 +/-    1.38  0.100 / 0.120
G13     234.3          18.0                4.1 +/-    3.07       9.4 +/-    3.07  0.130 / 0.160
G15     265.9          10.2                3.0 +/-    1.82       8.3 +/-    1.82  0.040 / 0.070
G17     16.8           63.8                3.8 +/-    0.54       4.1 +/-    0.54  0.040 / 0.070
G19     304.4          72.0                4.5 +/-    0.61       4.7 +/-    0.61  0.030 / 0.040
G24     314.9          22.9                1.7 +/-    1.17       3.6 +/-    1.17  0.030 / 0.040
G28     80.3           43.1                3.7 +/-    0.41       5.1 +/-    0.41  0.050 / 0.240
G30     156.1          22.0                5.8 +/-    1.03      12.2 +/-    1.03  0.050 / 0.260