PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-21:58:00
G01     249.3          34.4               10.2 +/-    1.65      16.4 +/-    1.65  0.030 / 0.030
G03     315.5          45.3                6.5 +/-    1.01       8.8 +/-    1.01  0.040 / 0.040
G11     236.5          11.9                8.9 +/-    1.28      23.8 +/-    1.28  0.040 / 0.030
G14     62.2           39.7                5.9 +/-    2.03       8.7 +/-    2.03  0.030 / 0.030
G16     165.1          17.8               -2.0 +/-   18.60      -4.6 +/-   18.60  0.110 / 0.250
G22     302.9          66.9                6.9 +/-    0.36       7.4 +/-    0.36  0.120 / 0.190
G23     287.6          19.8                8.6 +/-    1.54      19.1 +/-    1.54  0.090 / 0.120
G26     137.0          38.7               11.2 +/-    0.76      16.6 +/-    0.76  0.070 / 0.110
G31     40.0           58.8                6.6 +/-    0.63       7.6 +/-    0.63  0.050 / 0.090
G32     78.4           22.6                6.0 +/-    2.05      12.3 +/-    2.05  0.040 / 0.080