PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/31-21:43:00
G01     230.2          20.7               10.6 +/-    2.17      23.0 +/-    2.17  0.030 / 0.020
G03     297.3          64.8                7.9 +/-    0.62       8.6 +/-    0.62  0.030 / 0.020
G14     82.1           27.5                8.4 +/-    1.75      15.6 +/-    1.75  0.060 / 0.060
G16     154.0          38.5               11.2 +/-    0.87      16.7 +/-    0.87  0.070 / 0.080
G22     233.2          74.2               10.1 +/-    0.30      10.4 +/-    0.30  0.030 / 0.080
G23     303.3          33.4                6.6 +/-    2.20      10.8 +/-    2.20  0.050 / 0.060
G26     109.0          53.0                9.4 +/-    0.64      11.5 +/-    0.64  0.170 / 0.280
G31     42.9           37.9                7.4 +/-    1.31      11.1 +/-    1.31  0.130 / 0.270
G32     95.4           9.5                10.9 +/-    2.30      30.7 +/-    2.30  0.080 / 0.130