PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-10:27:40
G02     202.5          26.6                4.1 +/-    0.99       7.8 +/-    0.99  0.060 / 0.100
G06     165.5          62.9                8.1 +/-    1.17       9.0 +/-    1.17  0.060 / 0.110
G12     304.4          12.1                1.0 +/-    3.67       2.7 +/-    3.67  0.110 / 0.270
G17     32.7           51.7                3.2 +/-    0.61       4.0 +/-    0.61  0.120 / 0.250
G19     336.1          68.9                4.4 +/-    0.94       4.7 +/-    0.94  0.030 / 0.040
G24     301.0          37.6                3.6 +/-    1.19       5.4 +/-    1.19  0.040 / 0.040
G28     95.7           36.2                4.2 +/-    0.72       6.4 +/-    0.72  0.030 / 0.040