PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-18:42:50
G01     259.6          38.5               10.9 +/-    1.25      16.2 +/-    1.25  0.200 / 0.230
G03     316.6          39.2                8.8 +/-    1.43      12.9 +/-    1.43  0.270 / 0.370
G10     134.3          10.4               11.3 +/-    3.21      31.3 +/-    3.21  0.040 / 0.100
G11     245.0          16.4                9.8 +/-    2.00      23.5 +/-    2.00  0.040 / 0.060
G14     52.2           45.7                7.6 +/-    0.93      10.1 +/-    0.93  0.040 / 0.060
G22     310.9          60.4               10.0 +/-    1.10      11.3 +/-    1.10  0.040 / 0.040
G25     45.4           14.0                5.7 +/-    2.03      14.6 +/-    2.03  0.030 / 0.030
G26     142.2          32.2               13.2 +/-    1.48      22.2 +/-    1.48  0.030 / 0.040
G31     43.8           65.6                8.0 +/-    0.32       8.7 +/-    0.32  0.060 / 0.160
G32     71.7           26.9                8.6 +/-    0.83      16.2 +/-    0.83  0.060 / 0.200