PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/29-19:27:50
G01     304.5          34.8               10.8 +/-    1.41      17.2 +/-    1.41  0.050 / 0.050
G10     108.8          38.6               10.3 +/-    0.53      15.4 +/-    0.53  0.040 / 0.050
G11     279.9          28.0               11.8 +/-    0.82      21.5 +/-    0.82  0.080 / 0.120
G14     2.5            65.6                8.8 +/-    0.65       9.5 +/-    0.65  0.090 / 0.120
G18     119.5          10.6               10.4 +/-    2.27      28.8 +/-    2.27  0.030 / 0.020
G22     310.5          27.8               10.5 +/-    2.36      19.2 +/-    2.36  0.030 / 0.020
G25     79.3           17.4               11.7 +/-    2.57      27.4 +/-    2.57  0.110 / 0.130
G31     166.4          67.3               10.6 +/-    0.43      11.4 +/-    0.43  0.100 / 0.130
G32     38.6           50.8                8.7 +/-    1.51      10.9 +/-    1.51  0.040 / 0.030