PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-13:57:40
G02     32.4           55.7                4.3 +/-    0.86       5.0 +/-    0.86  0.040 / 0.040
G05     144.9          62.1                8.1 +/-    1.12       9.1 +/-    1.12  0.030 / 0.050
G06     54.6           14.5                3.3 +/-    1.56       8.3 +/-    1.56  0.040 / 0.040
G12     194.5          65.4                5.7 +/-    1.07       6.2 +/-    1.07  0.040 / 0.040
G19     100.1          11.5                5.1 +/-    1.42      13.9 +/-    1.42  0.040 / 0.040
G25     289.5          57.6                5.3 +/-    0.78       6.1 +/-    0.78  0.030 / 0.040
G29     308.5          29.2                3.8 +/-    1.81       6.7 +/-    1.81  0.120 / 0.210