PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-13:57:40
G02     218.3          62.8                8.0 +/-    0.72       8.9 +/-    0.72  0.160 / 0.490
G06     53.3           73.9                8.3 +/-    0.47       8.6 +/-    0.47  0.130 / 0.380
G12     319.4          38.1                5.9 +/-    1.17       8.8 +/-    1.17  0.070 / 0.070
G17     61.6           28.4                5.2 +/-    0.42       9.4 +/-    0.42  0.080 / 0.060
G19     45.1           45.7                5.5 +/-    0.41       7.4 +/-    0.41  0.090 / 0.070
G24     263.7          40.7                9.7 +/-    0.94      14.0 +/-    0.94  0.090 / 0.080
G28     125.1          10.7                8.1 +/-    4.72      22.4 +/-    4.72  0.030 / 0.030