PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/15-06:27:40
G01     39.3           13.6                0.7 +/-    1.69       1.9 +/-    1.69  0.090 / 0.160
G02     199.7          10.9               -0.3 +/-    6.65      -0.9 +/-    6.65  0.080 / 0.170
G06     175.1          41.8                6.6 +/-    0.93       9.3 +/-    0.93  0.100 / 0.150
G13     234.1          19.8                5.4 +/-    2.04      11.9 +/-    2.04  0.080 / 0.150
G15     269.1          10.8                3.5 +/-    3.50       9.7 +/-    3.50  0.070 / 0.070
G17     13.9           65.7                3.2 +/-    0.60       3.4 +/-    0.60  0.060 / 0.090
G19     282.8          69.0              -17.9 +/-    0.40     -19.0 +/-    0.40  0.080 / 0.250
G24     313.3          26.1                3.2 +/-    2.63       6.1 +/-    2.63  0.070 / 0.250
G28     74.2           46.7                4.1 +/-    0.43       5.5 +/-    0.43  0.040 / 0.080
G30     156.0          25.3                5.5 +/-    2.15      10.8 +/-    2.15  0.050 / 0.080