PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-18:43:10
G02     273.2          79.7                8.7 +/-    0.90       8.8 +/-    0.90  0.070 / 0.170
G05     168.6          23.9               12.9 +/-    1.28      25.8 +/-    1.28  0.080 / 0.150
G06     40.4           47.7               10.1 +/-    0.79      13.1 +/-    0.79  0.030 / 0.050
G12     320.7          65.1                8.9 +/-    0.96       9.7 +/-    0.96  0.030 / 0.040
G17     78.3           16.7               10.7 +/-    0.80      25.5 +/-    0.80  0.120 / 0.280
G19     63.6           35.8               10.2 +/-    0.43      16.0 +/-    0.43  0.120 / 0.360
G24     235.1          29.1               11.6 +/-    1.28      20.7 +/-    1.28  0.040 / 0.040
G25     317.7          20.4                9.6 +/-    3.23      21.0 +/-    3.23  0.030 / 0.030