PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-00:58:00
G03     196.4          33.8                7.4 +/-    0.78      12.0 +/-    0.78  0.130 / 0.160
G07     278.0          30.2                6.9 +/-    1.47      11.9 +/-    1.47  0.150 / 0.180
G08     149.8          17.5                7.6 +/-    1.89      17.7 +/-    1.89  0.030 / 0.050
G09     319.5          49.3                3.8 +/-    0.70       4.8 +/-    0.70  0.040 / 0.040
G16     51.5           55.0                6.1 +/-    0.56       7.2 +/-    0.56  0.080 / 0.080
G22     181.5          18.5                6.5 +/-    1.69      14.8 +/-    1.69  0.080 / 0.100
G23     13.6           80.7                4.7 +/-    1.00       4.7 +/-    1.00  0.040 / 0.030
G26     43.4           24.6                4.3 +/-    2.14       8.5 +/-    2.14  0.040 / 0.040
G27     112.5          27.1                6.2 +/-    1.49      11.5 +/-    1.49  0.020 / 0.030