PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/18-21:43:10
G01     315.1          25.0                9.0 +/-    1.37      17.5 +/-    1.37  0.180 / 0.540
G10     92.1           48.6                9.4 +/-    0.78      12.0 +/-    0.78  0.140 / 0.410
G11     294.5          26.7                7.6 +/-    1.18      14.3 +/-    1.18  0.040 / 0.070
G14     328.0          70.8                9.6 +/-    0.64      10.1 +/-    0.64  0.030 / 0.070
G18     109.4          21.8               10.8 +/-    2.00      22.8 +/-    2.00  0.160 / 0.460
G22     304.6          16.1                7.8 +/-    3.55      18.9 +/-    3.55  0.150 / 0.430
G25     92.4           12.4               12.3 +/-    1.73      32.5 +/-    1.73  0.080 / 0.190
G31     177.0          49.4               11.7 +/-    0.82      14.9 +/-    0.82  0.080 / 0.180
G32     19.0           62.2                8.1 +/-    0.56       9.0 +/-    0.56  0.030 / 0.030